Grevillea shiressii

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Grevillea shiressii
Grevillea shiressii leaves & flowers.jpg
Near Pearl Beach
Scientific classification Red Pencil Icon.png
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Order: Proteales
Family: Proteaceae
Genus: Grevillea
Species:
G. shiressii
Binomial name
Grevillea shiressii

Grevillea shiressii is a species of flowering plant in the family Proteaceae and is endemic to New South Wales where it is found in only two localities near Gosford. It is an erect shrub with oblong to narrowly lance-shaped and small clusters of green to bluish-grey, later cream-coloured flowers with a brownish-maroon style.

Contents

Description

Grevillea shiressii is an erect, woody shrub that typically grows to a height of 1.5–5 m (4 ft 11 in – 16 ft 5 in). Its leaves are oblong to narrowly lance-shaped, mostly 8–19 mm (0.31–0.75 in) long and 13–30 mm (0.51–1.18 in) wide, sometimes with wavy margins. The flowers are arranged on the ends of branches or in leaf axils, in loose clusters of 2 to 10 on a rachis 1–8 mm (0.039–0.315 in) long, each flower on a pedicel 9–19 mm (0.35–0.75 in) long, the pistil 27–32 mm (1.1–1.3 in) long. The flowers are green in the bud stage, later bluish-grey to mauve, finally cream-coloured, the style brownish maroon. Flowering mainly occurs from July to December, and the fruit is a glabrous, elliptic follicle 14–16 mm (0.55–0.63 in) long. [2] [3] [4] [5] This grevillea is related to G. singuliflora . [6]

Taxonomy

Grevillea shiressii was first formally described in 1925 by William Blakely in the Proceedings of the Linnean Society of New South Wales . [7] [8] The specific epithet (shiressii) honours David William Campbell Shiress, [6] Blakely's "friend and companion on many botanical excursions". [8]

Distribution and habitat

This grevillea grows on alluvial sandy soils in forests along creek banks, under such trees as mountain blue gum ( Eucalyptus deanei ), turpentine ( Syncarpia glomulifera ) and rough-barked apple ( Angophora floribunda ), and alongside watergum ( Tristaniopsis laurina ) and river lomatia ( Lomatia myricoides ). It is only found growing naturally along two tributaries of the lower Hawkesbury River near Gosford north of Sydney, Mullet Creek near Wondabyne and Mooney Mooney Creek. [3] [5] [9]

Ecology

Birds forage among and pollinate the flowers of G. shiressii, while ants disperse the seeds. Wasps of the genus Eurytoma prey on the seeds. Plants are killed by fire and regenerate from seed. [5]

Conservation status

Grevillea shiressii is listed as "vulnerable" under the Australian Government Environment Protection and Biodiversity Conservation Act 1999 and the New South Wales Government Biodiversity Conservation Act 2016 (NSW) . The main threats to the species include its restricted distribution, track maintenance, inappropriate fire regimes, and weed invasion. [9] [10]

Use in horticulture

Grevillea shiressii grows into a bushy shrub in the garden, its flowers attracting birds and providing shelter for them. Its foliage is a feature. It can be propagated readily by seed or cutting. A cultivar known as G. 'Ruby Clusters' or G. 'Splendour' is a hybrid between G. shiressii and either G. oleoides or G. speciosa , with the red flowers of these species and the foliage of the former. [6]

Related Research Articles

<i>Grevillea longifolia</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

Grevillea longifolia, commonly known as fern-leaf spider flower, is a species of flowering plant in the family Proteaceae and is endemic to the Sydney Basin in New South Wales. It is an erect to spreading shrub with narrowly egg-shaped to almost linear leaves, and toothbrush-like groups of pinkish-fawn flowers with a pink to red style. It is fairly readily grown in gardens.

<i>Grevillea rosmarinifolia</i> Species of shrub in the family Proteaceae endemic to New South Wales and Victoria, Australia

Grevillea rosmarinifolia, commonly known as rosemary grevillea, is a species of flowering plant in the family Proteaceae and is endemic to south-eastern continental Australia and naturalised in other parts of the country. It is usually an erect, compact to open shrub with linear, narrowly elliptic or narrowly oblong leaves with the edges rolled under, and loose clusters of pink to red flowers.

<i>Grevillea petrophiloides</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea petrophiloides, commonly known as pink pokers, rock grevillea or poker grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an erect shrub with divided leaves, the lobes mostly linear, and cylindrical clusters of usually pink to reddish pink and bluish-grey flowers.

<i>Grevillea lanigera</i> Species of shrub in the family Proteaceae endemic to Victoria and New South Wales in Australia

Grevillea lanigera, commonly known as woolly grevillea, is a species of flowering plant in the family Proteaceae and is endemic to south-eastern continental Australia. It is a spreading shrub with narrowly oblong to more or less linear leaves and clusters of pink to red, and cream-coloured flowers.

<i>Grevillea sericea</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

Grevillea sericea, commonly known as the pink spider flower, is a species of flowering plant in the family Proteaceae and is endemic to New South Wales. It is a shrub with elliptic to lance-shaped leaves with the narrower end towards the base, and clusters of usually pink flowers arranged on one side of a flowering rachis.

<i>Grevillea oldei</i> Species of shrub

Grevillea oldei is a species of flowering plant in the family Proteaceae and is endemic to a small area of eastern New South Wales. It is a diffuse shrub with narrowly egg-shaped to more or less triangular leaves, and red flowers.

<i>Grevillea guthrieana</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea guthrieana, commonly known as Guthrie's grevillea, is a species of flowering plant in the family Proteaceae and is endemic to New South Wales. It is a spreading shrub with oblong leaves and clusters of two to six green and maroon flowers.

<i>Grevillea rivularis</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

Grevillea rivularis, commonly known as Carrington Falls grevillea, is a species of flowering plant in the family Proteaceae and is endemic to New South Wales. It is a dense, spreading shrub with divided leaves with more or less linear, sharply-pointed lobes, and clusters of cream-coloured flowers that turn pink or grey as they age.

<i>Grevillea mollis</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

Grevillea mollis, commonly known as soft grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted area of north-eastern New South Wales. It is an open, spreading shrub with oblong to elliptic leaves and loose clusters of bright scarlet red flowers.

<i>Lomatia myricoides</i> Species of plant

Lomatia myricoides, commonly known as the river lomatia, is a shrub native to New South Wales and Victoria in southeastern Australia.

Grevillea scortechinii, commonly known as the black grevillea, is a shrub which is endemic to Queensland and New South Wales in Australia.

<i>Grevillea sessilis</i> Species of shrub in the family Proteaceae endemic to Queensland, Australia

Grevillea sessilis is a species of flowering plant in the family Proteaceae and is endemic to north-eastern Queensland. It is a shrub or small tree with divided leaves and cylindrical clusters of white flowers with a creamy-white or greenish yellow style.

<i>Grevillea exposita</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea exposita is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a dense, spreading shrub with mostly oblong to narrowly elliptic leaves and clusters of bright red and white flowers.

<i>Grevillea kennedyana</i> Species of shrub in the family Proteaceae endemic to New South Wales and Queensland, Australia

Grevillea kennedyana, also known as flame spider-flower, is a species of flowering plant in the family Proteaceae and is endemic to a restricted area of inland eastern Australia. It is an erect shrub with many branches, usually linear leaves and erect clusters of rich red flowers.

Grevillea rhizomatosa, commonly known as Gibraltar grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted area of north-eastern New South Wales. It is a spreading, bushy shrub with egg-shaped to almost round leaves and small clusters of green and pinkish-red flowers.

<i>Grevillea quadricauda</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

Grevillea quadricauda, commonly known as four-tailed grevillea, is a species of flowering plant in the family Proteaceae and is endemic to eastern Australia. It is an erect, dense, bushy shrub with narrowly egg-shaped to elliptic leaves and small, loose clusters of green and pinkish-red flowers.

<i>Grevillea masonii</i> Species of shrub in the family Proteaceae endemic to New South Wales, Australia

Grevillea masonii, commonly known as Mason's grevillea, is a species of flowering plant in the family Proteaceae and is endemic to a restricted area of New South Wales. It is a low-growing shrub with egg-shaped to elliptic leaves, and red and green flowers with a green style.

Grevillea roycei is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is an open, erect to spreading shrub with divided leaves, the lobes linear to tapering, and more or less spherical clusters of cream-coloured and yellow flowers with a white style.

<i>Grevillea rudis</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea rudis is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a loose, spreading to erect shrub with divided leaves, the end lobes more or less triangular to oblong and sharply pointed, and more or less cylindrical clusters of cream-coloured flowers, the style turning pink as it ages.

<i>Grevillea scabra</i> Species of shrub in the family Proteaceae endemic to Western Australia

Grevillea scabra, commonly known as the rough-leaved grevillea, is a species of flowering plant in the family Proteaceae and is endemic to the south-west of Western Australia. It is a low, open shrub with clusters of narrowly elliptic to more or less linear leaves and small clusters of white to cream-coloured flowers.

References

  1. "Grevillea shiressii". Australian Plant Census. Retrieved 1 February 2023.
  2. Makinson, Robert O. "New South Wales Flora Online: Grevillea shiressii". Royal Botanic Gardens & Domain Trust, Sydney, Australia. Retrieved 7 January 2013.
  3. 1 2 "Grevillea shiressii". Australian Biological Resources Study, Department of Agriculture, Water and the Environment: Canberra. Retrieved 2 February 2023.
  4. Wrigley, John W.; Fagg, Murray A. (1991). Banksias, waratahs & grevilleas : and all other plants in the Australian Proteaceae family. North Ryde, NSW, Australia: Angus & Robertson. pp. 329–330. ISBN   0207172773.
  5. 1 2 3 Benson, Doug; McDougall, Lyn (1999). "Ecology of Sydney plant species: Part 7a Dicotyledon families Nyctaginaceae to Primulaceae". Cunninghamia. 6 (2): 1075. Retrieved 2 February 2023.
  6. 1 2 3 Olde, Peter; Marriott, Neil (1995). The Grevillea Book Volume 3. Australia: Kangaroo Press. pp. 170–71. ISBN   0864176112.
  7. "Grevillea shiressii". APNI. Retrieved 2 February 2023.
  8. 1 2 Blakely, William F. (1925). "Contributions to our Knowledge of the Flora of New South Wales". Proceedings of the Linnean Society of New South Wales. 50 (4): 383–384. Retrieved 2 February 2023.
  9. 1 2 "Grevillea shiressii - profile". New South Wales Government Office of Environment and Heritage. Retrieved 2 February 2023.
  10. "Approved Conservation Advice for Grevillea shiressii" (PDF). Australian Government Department of Climate Change, Environment, Energy and Water. Retrieved 2 February 2023.